Archive Widget - Active status (2 posts)

I am using the Archive widget, now if I click on a date on the list the content shows up, but its not indicating on which list item I am right now.

I want that if I click on "July 2013" the text becomes blue and all the other links are grey. I know how to do it with css but the items do not have a class which says its active. Like the menu with "current_page_item".